Colorado begins long cleanup

Flood Damage in Salina on Tuesday, Sept. 17, 2013 in the Fourmile Canyon area of Boulder County Colorado. (AP Photo/Daily Camera, Jeremy Papasso)

Jestin Franklin pushes a wheelbarrow full of mud while helping his grandmother clean flood damage at her home on Tuesday, Sept. 17, 2013 in the Fourmile Canyon area of Boulder County Colorado. (AP Photo/Daily Camera, Jeremy Papasso)

Local residents, who preferred not to give their names, remove water-logged and contaminated belongings destroyed in flooding, in Longmont, Colo., Wednesday Sept. 18, 2013. As water recedes and flows east onto the Colorado plains, rescuers are shifting their focus from emergency airlifts to trying to find the hundreds of people still unaccounted for after last week's devastating flooding. (AP Photo/Brennan Linsley)

In this Sept. 17, 2013, photo Tim Unruh, of Paxton, Neb., center, shovels sand into a bag held by his son, Jonathon Unruh with Doug Allen, at left, and Suzanne Messersmith, both of Ogallala, as residents sandbag along the South Platte River in Ogallala, Neb. Colorado floodwaters began flowing into the state Wednesday with some flooding in rural areas. (AP Photo/The World-Herald, Alyssa Schukar) MAGS OUT; ALL NEBRASKA LOCAL BROADCAST, TV OUT

Boys wear masks and gloves as they walk among destroyed household items several days after massive flooding swept through Longmont, Colo., Wednesday Sept. 18, 2013. As water recedes and flows east onto the Colorado plains, rescuers are shifting their focus from emergency airlifts to trying to find the hundreds of people still unaccounted for after last week's devastating flooding. (AP Photo/Brennan Linsley)

Local resident Chad Obrien comforts his four year old son Elijah, as he works to remove waterlogged and contaminated floors and walls from his flooded basement, which was wrecked in recent flooding, in Longmont, Colo., Wednesday Sept. 18, 2013. As water recedes and flows east onto the Colorado plains, rescuers are shifting their focus from emergency airlifts to trying to find the hundreds of people still unaccounted for after last week's devastating flooding. (AP Photo/Brennan Linsley)